Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Category
Mineralological Specimen
Browse mineralological specimen specimens identified by the Rock Identifier community.
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Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Copper-bearing Quartz Vein in Host Rock
Quartz with Malachite/Chrysocolla staining
igneous/metamorphic with mineral
Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Spinosaurus Tooth Fossil
Spinosaurus aegyptiacus (Calcium Phosphate/Apatite)
sedimentary
Rugose Coral Fossil
Rugosa (Order)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartzite with Hematite staining
Metamorphic Quartzite (SiO2)
metamorphic
River Stone (possibly Gneiss)
Metamorphic Gneiss
metamorphic
Diamond
Carbon (C)
mineral
Smoky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Not a rock, mineral, or geological specimen
N/A
Epidosite with Quartz (Unakite-variant or Jasper)
Epidotized Metasomatite
metamorphic
Banded Serpentinite with Calcite Veins
Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
metamorphic
Sandstone with Quartz Vein
Arenite with SiO2 intrusion
sedimentary
Clear Quartz Crystal (Likely Golden Healer/Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Vuggy Limestone
Carbonate Sedimentary Rock with Vuggy Porosity (CaCO3)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Shale (with Iron Staining)
Argillaceous mudstone / Shale
sedimentary
Clear Quartz (Faceted)
Silicon dioxide (SiO2)
gemstone
Diamond
Carbon (C)
gemstone
Diamond
Carbon (C)
gemstone
Diamond inlaid in Jewelry
Carbon (C)
mineral
Calcite specimen
Calcite (calcium carbonate, CaCO₃), likely crystalline limestone or cave-calcite aggregate
mineral
Unidentifiable Specimen
Undetermined
Unknown
Blue Grey Agate Geode
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Quartz Vein in Matrix
Silicon Dioxide (SiO2) within Rhyolitic or Granitic Matrix
igneous
Chert (Carnelian/Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Mixed Rock Collection
Polylithic Geological Specimen Mix
sedimentary and igneous
River Stone (Sedimentary Sandstone/Quartzite)
Arenite/Quartzite transition specimen
sedimentary
Chalcopyrite
CuFeS2 (Copper Iron Sulfide)
mineral
Sulfur-bearing Limestone (Solfatara Specimen)
Sulfur-rich Bio-limestone (Calcium Carbonate with Native Sulfur, S8)
sedimentary
Unidentified weathered rock, possibly quartz-bearing granite or rhyolite
Indeterminate; likely quartz–feldspar-rich silicate rock
igneous
Fossilized Shark Tooth (Sand Tiger)
Carcharias taurus (fossil specimen)
sedimentary
Smoky quartz (likely)
Quartz, silicon dioxide (SiO₂)
mineral
Limonitic Sandstone with Inclusion
Limonitic Quartz Sandstone (primarily SiO2 with FeO(OH)·nH2O)
sedimentary
Likely calcite-rich limestone or marble
Calcite (CaCO₃); possibly recrystallized limestone (marble)
metamorphic
Quartz Druse on Basalt Matrix
Silicon Dioxide (SiO2)
mineral
Banded Agate (with Quartz Geode Center)
Silicon Dioxide (SiO2)
mineral
Chert (Jasper and Chalcedony)
Silicon Dioxide (SiO2)
sedimentary
Common Opal / Chert
Hydrated silica (SiO2·nH2O) or Microcrystalline Quartz (SiO2)
mineral
Quartz with Mica/Schist inclusion
Silicon Dioxide (SiO2) with Phyllosilicates
mineral